the act of oral sex performed on a male in which sperm is ejaculated into the mouth and the person performing it then commences in osculation (makes out) with the male while sperm is still in the mouth

Jonny enjoys the act of snow blowing because he loves the taste of his own cum after he's been blown.

There are two possible scenarios:
1. the giver holds the sperm in their mouth and then proceeds to kiss the lucky male as they pass the sperm between their mouths. Reminder - to some this is supposed to be sexually arousing

2. When giving head, you blow really hard with your mouth cusped over the penis so the only direction the air has to go is into the penis. the penis and surrounding area then swell, and the prostate is exposed so an immediate explosive ejaculation without orgasm occurs. Thus the term snow blow, the sperm, or snow as it is referred to here, explodes, or blows, everywhere in a splatter/sawn off shotgun effect.

they talk about snow blowing in that movie with julia roberts and susan sarandon.. Step Mom

Jenny and Jack had to go to hospital. Jenny because she had an excessive amount of sperm ejaculated into her eye, jack because he had oxygen bubbles in his blood stream causing him to have aneurisms and a heart attack.

When PERSON A is giving PERSON B a blow job. And PERSON B cums in PERSON A's mouth without telling them. Out of spite, PERSON A goes up to kiss PERSON B (With cum still in their mouth) and spits it back into PERSON B's mouth.

Jenny: Oh my fricken gosh, he totally didn't warn me he was gonna cum!
Becky: That asshole! Did you get him back?
Jenny: Hell yea bitch, I totally snow blowed his ass!